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Search Results: 1 - 10 of 22308 matches for " Sohail Ahmad Jan "
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A Comparative Study of Electronic Properties of Bulk MoS2 and Its Monolayer Using DFT Technique: Application of Mechanical Strain on MoS2 Monolayer  [PDF]
Sohail Ahmad, Sugata Mukherjee
Graphene (Graphene) , 2014, DOI: 10.4236/graphene.2014.34008
Abstract: Electronic structure calculation of bulk and monolayer MoS2 has been performed using plane wave pseudopotential method based on density functional theory. The indirect band gap in the bulk MoS2 was found to be 0.9 eV, whereas in the monolayer-MoS2 the band gap of 1.57 eV was found to be direct one. The calculated physical parameters of monolayer MoS2 are found to be very close to the bulk MoS2 and compare well with available experimental and other theoretical results. The calculated density of states (DOS) may help explain this change in the nature of band gap in bulk and in monolayer MoS2. A further variation in band gap has been observed in MoS2 monolayer on applying biaxial strain.
Multivariate Based Variability within Diverse Indian Mustard (Brassica juncea L.) Genotypes  [PDF]
Noor Saleem, Sohail Ahmad Jan, Muahmmad Jawaad Atif, Haris Khurshid, Shahid Ali Khan, Mohib Abdullah, Muhammad Jahanzaib, Humair Ahmed, Syed Farman Ullah, Azhar Iqbal, Sameena Naqi, Muhammad Ilyas, Naushad Ali, Malik Ashiq Rabbani
Open Journal of Genetics (OJGen) , 2017, DOI: 10.4236/ojgen.2017.72007
Abstract: Indian mustard (Brassica juncea L.) germplasm consisting 167 accessions including one check cultivar was evaluated for qualitative and quantitative traits. The present study was conducted to investigate genetic diversity and correlation among studied genotypes of B. juncea L. based on agro-morphological at NARC, Islamabad, Pakistan. To investigate the genetic diversity based on morphological characters, data was recorded on 20 quantitative and 12 qualitative traits. The calculated data was analyzed through two complementary methods, i.e. PCA (Principal Component Analysis) and cluster analysis. Among all the studied cultivars, significant diversity was recorded for different agro-morphological characters. Among all the parameters, maximum variance was recorded for pod shattering (427.2) followed by plant height (345.6), days to 100% flowering (336.2) and main raceme length (210.0). Among all the characters, the greatest and highly significant association (0.99) was found between days to maturity 50% and days to maturity 100% followed by correlation (0.86) among days to flowering 50% and days to flowering 100%, correlation value (0.71) was calculated among leaf length and leaf width. Using cluster analysis all the genotypes were divided into five major groups. It was observed that 7 out of 20 principal components with an Eigen value of ≥1.0 calculated for 73.92% of the total diversity observed between 167 accessions of Indian mustard (B. juncea L.). The contribution of first three PCs in the total PCs was 23.25, 12.87 and 11.24, respectively. Among all the investigated accessions two genotypes 26,813 and 26,817 showed great potential for seeds/silique, 1000-seed weight and seed yield/plant, respectively, so these genotypes are recommended for future breeding programs for achieving promising results.
Moderate Interpretation with Attribute Analysis and 3d Visualization for Deeper Prospects of Balkassar Field, Central Potwar, Upper Indus Basin, Pakistan  [PDF]
Farhana Masood, Zulfiqar Ahmad, Muhammad Sohail Khan
International Journal of Geosciences (IJG) , 2017, DOI: 10.4236/ijg.2017.85037
Abstract: Balkassar is an old field with considerable remaining potential. The 2d, 3d seismic and earlier vintages show that Balkassar is composed of two folds that impart heart shaped geometry. It appears likely the early Eocene age Bhadrar formation may provide commercial production with lower water cuts from the eastern lobe (yet untapped) of the structure that may have at least 30 million barrels of unrecovered oil. Horizontal drilling may have promise as an optimum technique for recovery of oil from Paleogene reservoirs. Encouraging oil indications have also been recorded from the early Permian age tobra formation from Balkassar oxy-1 that was not tested by Oxy. Tobra sandstone reservoir can have a matrix porosity approaching 8%. When fractured recoveries from it can be relatively better than the Paleogene reservoirs. The 2D and 3D seismic acquisition has confirmed that the eastern lobe (yet untapped) of the Balkassar field is structurally higher and steeper than the Western lobe which has thus far produced over 30 million barrels. The Eastern lobe thus offers good potential for recovery of oil from the Bhadrar reservoir. The entire field is likely to have potential for recovery of oil from the early Eocene aged Tobra formation. 2-d and 3-D Seismic data interpretation, attribute analysis and visualization for deeper prospect carried in Balksasar field. Tobra and Khewra formation studied for deeper potential drilling. Time contour and depth contour map shows potential for deeper prospects. Also attribute analysis and 3d visualization show good results for deeper potential of Tobra and Khewar formations. Seismic amplitude, Reflection strength, Apparent polarity attribute are visualized and interpreted to find the potential for Tobra and Khewra formation. 3-D visualization also showed positive results for Tobra and Khewra formations.
Effect of Firm Structure on Corporate Cash Holding (Evidence from Non-Financial Companies)  [PDF]
Sher Khan, Zhuangzhuang Peng, Sohail Ahmad, Shahid Mahmood, Ijaz Ahmad
Journal of Financial Risk Management (JFRM) , 2019, DOI: 10.4236/jfrm.2019.81001
Abstract: The purpose of this study is to investigate the effect of firm structure (whether diversified or focused firms) on corporate cash holding. Samples of 80 non-financial companies were selected including diversified and focused firms which were listed on Karachi stock exchange for a period 7 years from 2006 to 2013. These diversified and focused firms were selected on the basis of equal proportionate method. Random effect model and descriptive statistics were used for the analysis of these variables. The results of these models showed that there is negative and significant effect of firm structure on corporate cash holding. We also find negative and significant relationship of leverage and Networking capital with the corporate cash holdings and the relation between growth opportunities and corporate cash holding was examined to be positive and significant. We also find a negative and insignificant relationship between firm size and corporate cash holding. The descriptive statistics showed that there was significant difference between the cash holding of diversified and focused firms. The diversified firms keep a smaller amount of cash as compare to the single segment companies (focused firms), which is in support of the trade-off theory. This paper contributes to current literatures with regard to organization structure (whether diversified or focused firms) on cash holding in a developing economy like Pakistan.
Log Linear Models for Religious and Social Factors affecting the practice of Family Planning Methods in Lahore, Pakistan
Farooq Ahmad,Sohail Chand
Pakistan Journal of Statistics and Operation Research , 2006, DOI: 10.1234/pjsor.v2i1.84
Abstract: This is cross sectional study based on 304 households (couples) with wives age less than 48 years, chosen from urban locality (city Lahore). Fourteen religious, demographic and socio-economic factors of categorical nature like husband education, wife education, husband’s monthly income, occupation of husband, household size, husband-wife discussion, number of living children, desire for more children, duration of marriage, present age of wife, age of wife at marriage, offering of prayers, political view, and religiously decisions were taken to understand acceptance of family planning. Multivariate log-linear analysis was applied to identify association pattern and interrelationship among factors. The logit model was applied to explore the relationship between predictor factors and dependent factor, and to explore which are the factors upon which acceptance of family planning is highly depending. Log-linear analysis demonstrate that preference of contraceptive use was found to be consistently associated with factors Husband-Wife discussion, Desire for more children, No. of children, Political view and Duration of married life. While Husband’s monthly income, Occupation of husband, Age of wife at marriage and Offering of prayers resulted in no statistical explanation of adoption of family planning methods.
Quality Enhancement of Corporate Management Systems: An Overview of Best Management Practices  [PDF]
Giron Kamonja, Yan Liang, Muhammad Tayyab Sohail, Shahzad Ahmad Khan
Journal of Service Science and Management (JSSM) , 2014, DOI: 10.4236/jssm.2014.74027
Abstract:

In this my present study, I elaborate different types of management, management staffs, types of managers and leaders along with their capacities of work and their roles in any organization or institute to achieve the desired goal with the help of employees. A study found that most of the CEOs of the 62 major US-based companies spent at least 10 percent of their time in quality enhancement efforts. The critical importance of employees’ involvement in the quality process of an organization is based on the belief that the best process innovation ideas come from the people actually doing the job. Employee involvement in quality efforts can only come about when the employees know that the organization cares for them. Best companies do not just confine education and training to their shop floor employees and managers. Top executives are actively involved in the learning process themselves. Training is the key element of management system. For the smooth run of any organization we always need proper training for all employees including leadership authority.

Quality Improvement in Management System: A Case Study of CCTEC Company China  [PDF]
Giron Kamonja, Yan Liang, Muhammad Tayyab Sohail, Shahzad Ahmad Khan
American Journal of Industrial and Business Management (AJIBM) , 2014, DOI: 10.4236/ajibm.2014.44028
Abstract:

Certain difficulties are inherent in the implementation of the improvement of the quality of service, particularly in the Design Management Department. There is often a difference on the issue of translating vision between senior management and Design Department for service improvement into effective, operational QI programs. Middle managers have a key role to play, but often they are overlooked which leads to undermining their efforts to improve the quality programs offered by senior management. This paper describes the first phase of a PhD research project to determine and develop the role of middle management in successful implementation of quality management programs. A framework for quality improvement implementation, including key issues of importance to middle managers regarding their proactive involvement in QI, is suggested. Finally, the initial implementation of the model in a company is discussed.

Hypoglycemic Effect of Ginger (Zingiber officinale) in Alloxan Induced Diabetic Rats (Rattus norvagicus)
Saghir Ahmad Jafri*, Sohail Abass and Muhammad Qasim
Pakistan Veterinary Journal , 2011,
Abstract: A study was conducted to evaluate the hypoglycemic effect of Zingiber officinale (Ginger) aqueous extract at a dose of 500mg/kg body weight (BW) once a day for six weeks. The rats were made diabetic by intraperitoneal injection of alloxan (65mg/kg BW once) which induced diabetes in albino rats after 8 days. Albino rats (n=24) each weighing 150-180g were divided in 3 equal groups. Group A served as control, group B was diabetic and was not given ginger whereas group C rats were diabetic and given ginger extract (500mg/kg BW). Serum of each rat was analyzed by enzymatic kits to estimate serum glucose on 1st day (after making them diabetic), 21st and 42nd day. Blood glucose level remained unaltered in group A and B over time. However, group C, given ginger extract, showed significant (P<0.05) reduction in serum glucose level after day 21 and 42 post treatment. It may be concluded that ginger extract has hypoglycemic effect on diabetic rats.
ANALYSIS AND MEASUREMENT OF WI-FI SIGNALS IN INDOOR ENVIRONMENT
Ahsan Sohail,Zeeshan Ahmad,Iftikhar Ali
International Journal of Advances in Engineering and Technology , 2013,
Abstract: The measurement and analysis of radio waves propagation play significant part in the plan and function of WLAN applications. This paper provides an overall coverage of the Wi-Fi in the indoor environment. In this paper radio waves propagation for indoor environments will be considered using the Wireless LAN 802.11b/g at the frequency of 2.4 GHz. This paper involves the study of the effect on building’s structure and materials used within the access points set up at different locations and obtaining Wi-Fi measurements and comparing them with values predicted by classical model such as ITU Indoor Propagation Model. Measurements of signal strength using the Wi-Fi card utility will be carried out in the research. The aim of this paper is to study the conduct of signal strength when it travels through line of sight (LoS) and non-line of sight (NLoS) and results will be compared with an Indoor site general model of ITU.
Effects of different planting systems on yield of potato crop in Kaghan Valley: A mountainous region of Pakistan  [PDF]
Muhammad Qasim, Salma Khalid, Alia Naz, Muhammad Zafarullah Khan, Sohail Ahmad Khan
Agricultural Sciences (AS) , 2013, DOI: 10.4236/as.2013.44025
Abstract:

Conversion of potato from conventional methods to wide bed planting systems may increase water and nitrogen use efficiency in commercial potato production system by reducing the amount of irrigation water and water applied nitrogen fertilizer bypassing the potato root zone. Potato (Solanum tuberosum L) cv. Desiree was tested against different planting system for yield and yield components at Kaghan, a high mountainous Himalayan region ofPakistan. The experiment was carried out at Himalayan Agricultural Research Station (HARS), Kaghan during the summer season of 2005. The results showed that maximum tuber growth (88.7%), number of stems per plant (3.5), plant expansion (45.5 cm), average number of tubers per plant (10.1) and yield per hectare (12.4 t/ha) were significantly different and higher when potatoes were planted on wide bed and covered with soil from one side. Tallest plants (53.4 cm) were observed when potatoes were sown on the ridges. Maximum number of green potatoes (12.5) and injured potatoes (5.3%) were observed when the tubers were planted following local farmers’ method. Keeping in view the soil type, land slopping, we recommend sowing potatoes on relatively plain wide beds and covering it with soil from one side, for potato cultivation in the area.

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